Abstract
After the initial training of the lever pressing response for sweetened condensed milk, rats were put on different fixed-ratio (FR) schedules of reinforcement under conditions of being food satiated and food deprived. Doses of methamphetamine ranging from 0.125 to 1.0 mg/kg were tested in these rats for effects on response rates. Response rates of the satiated rats at the higher FR requirements were slower than those of the deprived rats. At the doses of methamphetamine used, the satiated animals responded at slower than their control response rates and the deprived rats tended to respond faster than control rates.
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Owen, J.E., Campbell, J.T. Effects of methamphetamine on fixed-ratio responding of food satiated and food deprived rats. Psychopharmacologia 34, 223–232 (1974). https://doi.org/10.1007/BF00421963
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DOI: https://doi.org/10.1007/BF00421963